Keyphrases
- single image
- sparse coding
- sparse codes
- discriminative power
- object category recognition
- dictionary learning
- unsupervised learning
- sparse representation
- natural images
- discriminative dictionary
- image classification
- linear combination
- image representation
- generative model
- subspace learning
- light source
- super resolution
- feature space
- image patches
- high dimensional
- object recognition
- machine learning
- semi supervised
- intrinsic images
- feature extraction
- object categories
- higher order
- dimensionality reduction
- pattern recognition
- image processing